/*
 *    Copyright 2006-2021 the original author or authors.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.mybatis.generator.codegen.mybatis3.model;

import static org.mybatis.generator.internal.util.JavaBeansUtil.getJavaBeansField;
import static org.mybatis.generator.internal.util.JavaBeansUtil.getJavaBeansGetter;
import static org.mybatis.generator.internal.util.JavaBeansUtil.getJavaBeansSetter;
import static org.mybatis.generator.internal.util.messages.Messages.getString;

import java.util.ArrayList;
import java.util.List;

import org.mybatis.generator.api.CommentGenerator;
import org.mybatis.generator.api.FullyQualifiedTable;
import org.mybatis.generator.api.IntrospectedColumn;
import org.mybatis.generator.api.Plugin;
import org.mybatis.generator.api.dom.java.CompilationUnit;
import org.mybatis.generator.api.dom.java.Field;
import org.mybatis.generator.api.dom.java.JavaVisibility;
import org.mybatis.generator.api.dom.java.Method;
import org.mybatis.generator.api.dom.java.Parameter;
import org.mybatis.generator.api.dom.java.TopLevelClass;
import org.mybatis.generator.codegen.AbstractJavaGenerator;
import org.mybatis.generator.codegen.RootClassInfo;

public class RecordWithBLOBsGenerator extends AbstractJavaGenerator {

	public RecordWithBLOBsGenerator(String project) {
		super(project);
	}

	@Override
	public List<CompilationUnit> getCompilationUnits() {
		FullyQualifiedTable table = introspectedTable.getFullyQualifiedTable();
		progressCallback.startTask(getString("Progress.9", table.toString())); //$NON-NLS-1$
		Plugin plugins = context.getPlugins();
		CommentGenerator commentGenerator = context.getCommentGenerator();

		TopLevelClass topLevelClass = new TopLevelClass(introspectedTable.getRecordWithBLOBsType());
		topLevelClass.setVisibility(JavaVisibility.PUBLIC);
		commentGenerator.addJavaFileComment(topLevelClass);

		String rootClass = getRootClass();
		if (introspectedTable.getRules().generateBaseRecordClass()) {
			topLevelClass.setSuperClass(introspectedTable.getBaseRecordType());
		} else {
			topLevelClass.setSuperClass(introspectedTable.getPrimaryKeyType());
		}
		commentGenerator.addModelClassComment(topLevelClass, introspectedTable);

		if (introspectedTable.isConstructorBased()) {
			addParameterizedConstructor(topLevelClass);

			if (!introspectedTable.isImmutable()) {
				addDefaultConstructor(topLevelClass);
			}
		}

		for (IntrospectedColumn introspectedColumn : introspectedTable.getBLOBColumns()) {
			if (RootClassInfo.getInstance(rootClass, warnings).containsProperty(introspectedColumn)) {
				continue;
			}

			Field field = getJavaBeansField(introspectedColumn, context, introspectedTable);
			if (plugins.modelFieldGenerated(field, topLevelClass, introspectedColumn, introspectedTable,
					Plugin.ModelClassType.RECORD_WITH_BLOBS)) {
				topLevelClass.addField(field);
				topLevelClass.addImportedType(field.getType());
			}

			Method method = getJavaBeansGetter(introspectedColumn, context, introspectedTable);
			if (plugins.modelGetterMethodGenerated(method, topLevelClass, introspectedColumn, introspectedTable,
					Plugin.ModelClassType.RECORD_WITH_BLOBS)) {
				topLevelClass.addMethod(method);
			}

			if (!introspectedTable.isImmutable()) {
				method = getJavaBeansSetter(introspectedColumn, context, introspectedTable);
				if (plugins.modelSetterMethodGenerated(method, topLevelClass, introspectedColumn, introspectedTable,
						Plugin.ModelClassType.RECORD_WITH_BLOBS)) {
					topLevelClass.addMethod(method);
				}
			}
		}

		List<CompilationUnit> answer = new ArrayList<>();
		if (context.getPlugins().modelRecordWithBLOBsClassGenerated(topLevelClass, introspectedTable)) {
			answer.add(topLevelClass);
		}
		return answer;
	}

	private void addParameterizedConstructor(TopLevelClass topLevelClass) {
		Method method = new Method(topLevelClass.getType().getShortName());
		method.setVisibility(JavaVisibility.PUBLIC);
		method.setConstructor(true);
		context.getCommentGenerator().addGeneralMethodComment(method, introspectedTable);

		for (IntrospectedColumn introspectedColumn : introspectedTable.getAllColumns()) {
			method.addParameter(new Parameter(introspectedColumn.getFullyQualifiedJavaType(),
					introspectedColumn.getJavaProperty()));
			topLevelClass.addImportedType(introspectedColumn.getFullyQualifiedJavaType());
		}

		boolean comma = false;
		StringBuilder sb = new StringBuilder();
		sb.append("super("); //$NON-NLS-1$
		for (IntrospectedColumn introspectedColumn : introspectedTable.getNonBLOBColumns()) {
			if (comma) {
				sb.append(", "); //$NON-NLS-1$
			} else {
				comma = true;
			}
			sb.append(introspectedColumn.getJavaProperty());
		}
		sb.append(");"); //$NON-NLS-1$
		method.addBodyLine(sb.toString());

		for (IntrospectedColumn introspectedColumn : introspectedTable.getBLOBColumns()) {
			sb.setLength(0);
			sb.append("this."); //$NON-NLS-1$
			sb.append(introspectedColumn.getJavaProperty());
			sb.append(" = "); //$NON-NLS-1$
			sb.append(introspectedColumn.getJavaProperty());
			sb.append(';');
			method.addBodyLine(sb.toString());
		}

		topLevelClass.addMethod(method);
	}
}
